20559715

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{1999}}^1$

素因数の和:2043

約数の個数: 24

約数和(自身を含む): 28728000

約数和(自身を除く): 8168285

約数列:

[1, 5, 11, 17, 55, 85, 121, 187, 605, 935, 1999, 2057, 9995, 10285, 21989, 33983, 109945, 169915, 241879, 373813, 1209395, 1869065, 4111943, 20559715]

約数ペア:

[(1, 20559715), (5, 4111943), (11, 1869065), (17, 1209395), (55, 373813), (85, 241879), (121, 169915), (187, 109945), (605, 33983), (935, 21989), (1999, 10285), (2057, 9995)]